Three lenses of forcal lengths +10 , -10 cm and +30 cm are placed at distance of 30 cm , 35 cm and 45 cm respectively from an object.
The distance between the object and the image formed is

An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm. The distance of the image formed is

An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm. The distance of the image formed is

Thin converging lenses of focal lengths 2 cm and 10 cm are used respectively as the objective and the eyepiece of a microscope. The distance between the optical centre of the lenses is 26 cm . If an object is placed at a distance of 2.25 cm from the objective , find the position and magnification of the final image.

The focal lengths of the objective and eyelens of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity, the distance between the object and the objective lens is :

The focal lengths of the objective and eyelens of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity, the distance between the object and the objective lens is :

The focal lengths of the objective and eyelens of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity, the distance between the object and the objective lens is :

The focal lengths of the two lenses of a compound microscope are 0.5 cm and 1 cm respectively . An object is placed at a distance of 1 cm from the objective. If the final image of the object is formed at a distance of 25 cm from the eye , what is the distance between the two lenses and the magnifying power of the microscope ?